Automatic jack for vehicles



C. F. AND A. BRINKMAN. AUTOMATIC JACK FOR VEHICLES. APPLICATION FILED mac. 6. 1920.

c. F. AND A. BBINKMAN.

AUTOMATIC JACK FOR VEHICLES. APPLICATlON FILED DEC. 6. 1920.

1,373,549. Patented Apr. 5, 1921.

2 SHEETS-SHEET 2.

Carl F. Elrinkman Adolph. Ermkm an i channel barfs at their-center.

The'bumper22 is carried at the forward endflof the-vehicle by the arms 23 and 24:,

,UNITED STATES- PATENT. OFFICE.

CABLE. BRINKMAN AND ADOLPH BRINKMAN, or MILWAUKEE, WISCONSIN.

AUTOMATIC JACK roe VEHICLES.

' "To -all whom it may concern:

also be used as a bumper or safety device, and may also be provided wlth a baggageticularly adapted for use'in connection with vehicles whichare motor driven.

"Oneofthe principal ob e'cts of the lnvention is to provide an attachment which is carried 'on the vehicle, and which may be used to jack'upthe wheels and-may be '1119. b A further object *of the invention is to prdvide' a deviceof this "kind, which may alsobeoperated manually when ClGSHGQl.

A still further object of the invention is to provide a device of this kind which may operated with power derived from the encarrying attachment.

Other 'ob'ect s and advantages -w1ll appear from the following description, in which 5 Figured is aside-elevation of a vehicle with ourinventionattachedthereto;

"Fig. 2is a vertical crosssection on the 11116 2-2 of Fig. 1. a I Y Fig-. 3 isa' plan-view with parts shown in section, and

Fig; t is' avertical cross-section on the line 4-4-'ofFig. 3.

Ihe vehicle to which our device is applied, comprises the longitudinal channel bars-1O and )11, which are provided near their ends'withfithe' depending brackets 12, 13, 14: and 15,'which are braced by the longitudinal'rods 16, 17, 18 and 19 which extend from-ithe brackets 20-and21 attached to the which 'arepivoteclat 25 to the brackets 12 and 13 respectively, A luggage carrier 26 may-bestretched across between the arms 23 and 24:, and attached to the bumper. The rods 27 and 28 are pivotally attached at their it'orward ends to thebumper 22 and are pivoted at their rear ends to the slidable sleeve's 29 and 30' respectively. These sleeves Specification of Letters Patent.

V Patented. Ap1n'5, 1921.

Application file'dDecember 6, 1920. Serial No. 428,778.

are slid ably mounted on therods 31 and "32 which are journaled at one-end in the :de-"

pending bracket 33 and extend through the brackets 20 "and 21,-and are journaled at their other ends in the-dependingbrackets springs act .to force the sleeves*29 and 30 which are internally "threaded into engage:- ment with'the threaded portions 36.;and 37 of the rods 31 and 32. As these rods :are

rotated, the sleeves will be carried atoward the abutments 412 and 453, which ,ar'exheld against the ends of the threaded portions by the'springs l'O and 4:1. i a As the sleevesare carried tOWlI'CLthG other ends of the threaded portions, the bumper will be-swung downwardly raboutsits pivot and will eventually be carried underneath its pivot 25, and thereby raise the Wheels from the ground. vAfter :the sleeves have been carried pastthe threaded portions they will be held by the springsAO and 41 in position to 'engage the threads xupon rotationiof the rods 31 and 32 in the opposite direction,- and will thereby Elowerfthe wheels again to the groundand raise'thebumpera V The means for rotating the rods '31 :and 32 1 comprises the transverse mounted in the brackets '20and .21, andiconnected to said "rods by the worm gearings 45 and .16 respectively. The shaft 44 is driven by the worm gearing 17 from the longitudinal shaft 48, which is mounted in theidepending brackets 49 and 50, and carries on vits forward end a slidable sleeve51 which carries the reversing gears 52 and The'latch means for retaining thebumper in its raised position, comprises the pawls and 61, mounted in the ears 62 and 63 which are, carried bythebrackts 12 and 13.

shaft 1 44 3a. A bumper :35 maybe connected'totthe Pawls areheld by the springs64t and '65 as shown in Fig. 4, and may beactuatedto release the bumper through thelinks 66 and l rear bumper similarly connected to the rear end of the vehicle, means forswinging V 67 connected to the opposite ends of the cross head 68 which is journaled on the stud 69 and provided with an actuatinglever 7 The shaft 44 is provided with anendil to which maybe attached a hand crank for said bumpers underneath theends of the vehicle to. jack up the wheels, and means manual operation when it is desirable" to operate the jack manually. h The motor driven means is disconnected byi meansofthe clutch.72 provided'with the flangedj portion-73 for connecting or discon-a nectingthessameh The bumpers22 and:35

,l are provided Iwith rollersl'i't, 75,76 and77 for engaging the ground when the sameare being-used forjacking up the wheels.

Normally the'bumpers'are carried in the position shown -in:Fig. 1,?and are held 111- this position by the latch mechanism illustrated in detail in Fig; 4. It will benoted thatthe sleeves29 and 30 are separated-by an ap'preciable'dista'nce from the threaded: portions 36 and 37, .When: the latch mechanism is, released, therefore, the bumpers will immediately drop. to= a point near the" ground and will act as a safety device to catch any p rso kwho is struck :b the mpen-v V g If it is desired A g to jack wheels, one 'ofthe beveled gears. 52 .or53 is connected with the beveledgear' 55, and with the motor 1 running the rods31 and 32 will beoppositely rotated to drawthe bumperiunderneath the pivot. 25. VVhen' it: is desired to restore the bumper and to lower the wheels,-

the gearing 52,53 and 55 is reversed, and if itis desiredto operate the :jack manually these gears are left in neutral posltlon, the

clutch 72 is'released' and the crank applied to the end 71 of the; shaft 4A. V

*Havingthus described our invention we claim: *1

1 at that-end, means for operatively connect 1. An attachment for motor vehicles'comprising a bump'er,'means for pivotally connecting said bumper to'the forward end of a. vehicle to project in front of: the same, means for swinging said bumper underneath theforward end of the vehicle to jack up I the front wheels, and means for operatively connecting said first mentioned-means to the crank shaft ofthe engine.

2. An attachment for motor vehicles comprising a bumper, means for pivotally convnectingsaid bumper to the forward end of avehicle to project .injfront of the same,

means for swinging said bumper underneath the forward end of the vehicle to jack up the front wheels, means for operatively connecting said first mentioned means to the crank shaft of the engine, and means for manually operating said first mentioned means when=desired. i

An attachment for motor vehicles comprising a bumper, means for pivotally connecting thebumper to the forward'end of the front of the vehicle to jack up the wheels at that end, 'meansffor operatively' tioned means 7 4. prising a bumper, means for pivotally connecting the bumperto the forwardendof;

"for op'eratively connecting said first men- .to the crank shaft of the engine. 7' Anattachmentfor motor vehicles comthe vehicle to project in front of the same, a

the crank shaft of the engine, and means for manually operating said first mentioned means when desired. r ,1: .Q, 5

; 5.]An attachment for motor vehicles-coma rear bumper similarly connected to y the rear end of the vehicle, means for selectivel i swinging either of said bumpers underneat the end of the vehicle to jack cupthe wheels at that end, and. means for operatively. con

necting said first mentioned means to crank shaft oftheengine.

the

prising a b p r, mean piv a y 011- v nectingsald bumperto the forward end of the vehicle to project in. front of thesame, a rear bumper similarly connected, to the rear end ofthe vehicle, means for selectively, swinging either of said bumpers underneath the end of the vehicle to jack up the wheels ing said first mentioned means to thecrank shaft of the engine, and means for manually operating said first mentioned means when desired.

" An attaghment 3 1 1 01. {Vehicles ceai' i110 prising a bumper, means for pivotally connecting'said bumper to the forward end'of the vehicle to project in front of thesame,

a rear bumper similarly connected to the rear end of the vehi le, means for selectivelyswinging-either ofsaid bumpers underneath connecting said first mentioned means to the. crankshaft of the engine, and a'ba'ggage carrier attached to one of saidbumpers.

8. In combination with the chassis and wheels of a motor vehicle, brackets depending fromone end ofthe chassis, arms pivotally mounted in said brackets, a bumper carried on the ends of said arms, said arms being of such length that the wheelsfiwill be raised from the ground when the arms and bumper are swung underneathjtheir pivot, a latch forholding said bumperoutwardly beyond the end of said vehicle,

prising a bumper, meansfor pivotally con-= 'necting said bumperto the forward end of; the vehicle to; project infront of the-same,

6,,An attachment for motor vehicles coma 1,373,549 I V I 8 means for stopping said bumper above the In testimony that we claim the foregoing ground When said latch is released, means We have hereunto set our hands at Milfor subsequentlyvmoving said bumper un- Waukee, in the county of Milwaukee and 10 derneath said pivot to raise the Wheels from State of Wisconsin. 5 the ground, said last named means being operable 'manually or from the motor as CARL F. BRINKMAN.

desired. v ADOLPH BRINKMAN; 

